Electron Diffraction Study of an Inorganic Spin-Peierls System CuGeO3

Osamu Kamimura, Masami Terauchi, Michivoshi Tanaka, Osamu Fujita, Jun Akimitsu

Research output: Contribution to journalArticlepeer-review

94 Citations (Scopus)


An electron diffraction study of an inorganic spin-Peierls system CuGeO3 was performed. Weak superlattice reflections indexed by (h/2)k(l/2)(h, k, l: odd) are observed in electron diffraction patterns taken at about 10 K with the [100] electron incidence. The reflections are interpreted as characteristic of a superlattice structure of the space group Bbcm or Bbmm with cell dimensions a' ≃ 2a, b' ≃ b and c'≃ 2c and with dimerization of Cu atoms along the quasi-one-dimensional [001] or the [010] direction, which is strong evidence of the spin-Peierls transition. Strong diffuse streaks which run along the redirection through the fundamental reflections are observed at the same temperature. The streaks are attributed to low-frequency transverse acoustic waves of the oxygen octahedra and can be precursors to another phase transformation below the spin-Peierls transition.

Original languageEnglish
Pages (from-to)2467-2471
Number of pages5
JournalJournal of the Physical Society of Japan
Issue number7
Publication statusPublished - 1994


  • CuGeO3
  • diffuse streaks
  • dimerization
  • electron diffraction
  • spin-Peierls transition
  • superlattice reflections


Dive into the research topics of 'Electron Diffraction Study of an Inorganic Spin-Peierls System CuGeO3'. Together they form a unique fingerprint.

Cite this